Sphere Online Judge (SPOJ)

list of partial problems

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
429	Simple Numbers Conversion		285	45.49
452	Longest Common Subsequence		215	38.72	17 28
1486	The Ants in a Tree	1	55	77.68	50 50
2198	Leaves	26	920	86.83	22 28
2211	Mars Map	15	572	86.26	24 24
2224	Team Selection	17	502	90.73	15 19
2226	IOI01 Mobiles	7	474	90.91	15 22
2227	IOI05 Mountains	2	87	81.15	17 34
2228	IOI07 Pairs		53	88.50	50 50
2229	Lubenica	1	143	88.65	17 17
2249	Police	1	47	83.97	50 50
2255	IOI07 Miners	5	228	88.99	31 28
2304	Monkey island		26	94.61
2333	Billboard painting		21	94.83
2354	Distance		41	88.82
2663	Triangles		58	86.84
2798	Query on a tree again!	59	2353	87.13	24 22
2802	Triangles 2		2	100.00
3077	Copier Reduction	1	33	91.80	1 1
3079	Consecutive Digits	1	12	78.95	17 17
3080	Painter	1	16	87.10	17 17
3082	Primary X-Subfactor Series		12	100.00
3088	Packing		19	90.70
3095	Symmetric Order	1	29	94.87	1 1
3096	Overflowing Bookshelf		37	87.23
3097	Flow Layout		16	95.83	1 1
3098	Tree Grafting		19	96.43
3132	Server Relocation	1	17	98.44	17 17
3185	Linear Pachinko	2	24	100.00	1 1
3186	Frugal Search		14	100.00
3187	Go Go Gorelians	2	13	78.95	17 17
3188	Minimum Spanning Tree	112	8875	83.04	10 9
3448	Connect	1	6	100.00	26 26
3449	Sum of Squares		93	89.55
3450	Fast Width	1	37	89.11	17 17
3508	IOI07 Sails		0	0.00
3509	IOI07 Training		0	0.00
3510	IOI07 Flood		0	0.00
3547	IOI06 The Valley of Mexico		1	100.00
3548	IOI06 Pyramid		1	100.00
3552	IOI05 Birthday		1	100.00
3554	IOI05 Rivers		13	83.33
3610	BOI 97 - Factorial		93	85.34
3677	BOI 97 - Task Execution		20	83.33
4108	BOI 97 - Street Network		8	83.33
4257	First Number		218	75.68
4296	The God-land		14	94.20
4319	Homeless Jozo		13	91.67
4334	Highway Advertising		18	95.56
4353	Masking Tape		17	90.24